add network whitelist for public relay node

easytier/src/peers/peer_manager.rs

@@ -309,6 +309,21 @@ impl PeerManager {
         self.add_client_tunnel(t).await
     }
 
+    fn check_network_in_whitelist(&self, network_name: &str) -> Result<(), Error> {
+        if self
+            .global_ctx
+            .get_flags()
+            .foreign_network_whitelist
+            .split(" ")
+            .map(wildmatch::WildMatch::new)
+            .any(|wl| wl.matches(network_name))
+        {
+            Ok(())
+        } else {
+            Err(anyhow::anyhow!("network {} not in whitelist", network_name).into())
+        }
+    }
+
     #[tracing::instrument]
     pub async fn add_tunnel_as_server(&self, tunnel: Box<dyn Tunnel>) -> Result<(), Error> {
         tracing::info!("add tunnel as server start");
@@ -319,6 +334,7 @@ impl PeerManager {
         {
             self.add_new_peer_conn(peer).await?;
         } else {
+            self.check_network_in_whitelist(&peer.get_network_identity().network_name)?;
             self.foreign_network_manager.add_peer_conn(peer).await?;
         }
         tracing::info!("add tunnel as server done");